Motometer mounting and lock



Augx 7, 1928.

w. MCARTHUR, JR

MOTOMETER MOUNTING AND Loox Filedl April 6, 1925 2 Sheets-Sheet 1 MWA fMl Aug. 7,- 192s.

1,679,908 'w. MCARTHUR, JR

MOTOIQETER MOUNTING AND LOCK Filed April e, 1925 2 sheets-sheet 2 Ur:nl:

Patented Aug. 7, 1923.

UNITED'STATES, PATENT OFFICE.

EVARREN MQAIXJIHUR,` JR., OF PHOENIX, ARIZONl'a, ASSIGNOR TO MCARTHURBROTHERS MERCANTILE CO., O F PHOENIX, ARIZONA, A CORBORATION OF ARIZO.

Moroivinfrna MOUNTING AND noon.

Application filed April 6, 1925."Seria1 No. 20,909.

rlhis invention relates more particularly to improvements in lockingdevices 'for `securing temperature gauges or indicators, suc-has thewell known motometei, in po* sition on automobile radiators to preventthe theft or surrcptitious removal ot the glurl's- I am aware that priorto my invention, it had been suggested that the motometers be mounted onthe filling spouts or necks of the radiators, andbe locked in positionthereon by nuts or other suitable .mcansplaced` on the stems of themotometers after the stems had been projected through openings in thespouts, which were to be permanently secured to the radiators to preventany removal oi the motometers. lVith such constructlions, however, themanufacturer of the automobiles would be obliged to assemble themotometers on the spouts at the tao tory and ship the automobiles withthe niotoineters already in place on the radiators, as `it would not be'feasible or practical to ship the ornamental shells lor theradiatorsand the spouts unassembled on the automobiles and require the agents,dealers or purchasers of the automobile to assemble such parts. It isnot desirable to ship the automobileswith the motometers in place on theradiators, asthe motometers arelilrely to become broken or damaged Whilethe autoincbiles are in transit. Furthermore the automobile`manufacturer may not wish, as a inatterot policy, to supply and sellmotometers with the automobiles, as the dealers or customers can readilypurchase such an accessory anywhere and if the filling spouts arealready assembled on the radiators the motometers could not be readilymounted and locked in position onthe spouts.

One ot the principal objects of my invention is to provide an improvedmounting dcvice and locking' means 'for motometers so constructed thatn'iotoincters may be attached quickly and expeditiously to theiilling,lr spouts, (necks or other extensions) on the radiator,ln1t canonly be removed .trom the spouts when the latter` have been detachedfrom the radiators. `To this end, I have provided means carried by thestem ot the motoineter and so constructed that when the stem isprojected through an opening in the spout a latehing deviceautomatically locks the inotometer in position, thelatching device beingdisconnected from the stem of `boss 1l of `the radiator 9.

the motometer iroin the inside ot the spout only-when the spout isremoved irom'the radiator. j

`Other and incidental objects of my invention will become apparent tromthe following descriptionftaken in conjunction with the accoinpanying`drawings, wherein F ia'ure 'l 1s a front elevation oit a n'iotometerLandradiator spout, embodying my invention with part oi the radiatorshellshown in section and somewhat diagrainmatically Fig. 2 isalongitudinal section taken through the radiator spout,` as on the line2-2 ot Fig. l, the motometer being shown in side elevation; Fig. 8 isaside elevation ot the sleeve and spring` locking ring carried by thestem ot the motometer; Figi'. l is a detail horizon' tal sectional view,taken on the line l--l of Fig. 3; Fig. 5 is a `fragmentary sectionalviewshowing a modied form `ot my inveir tion; Fig. 6 is a plan. view otthen locking ring shown in Fig. o; Fig. 7 vis a fragmentary sectionalView showing still another modication of my invention; Fig. 8 is anenlarged fragmentary sectional view of the inotometer, its support andlocking; mecha msm shown in Fig. 1'; Fig. 9 is a fragmentary frontelevation of the radiator shelland the inotometer installed on theradiator in accordance with my invention, beingl shown partially insection to illustrate the relation ol the parts; and Fig. l0 is ahorizontal sec tion ta (en on line llll0 of Fig. 9.

3referring to Figs. l and 2, the radiator spout l0 has an enlargedcircular boss l2 at its lower end which is internally screw threaded sothat it may be screwed into place on the ordinary threaded extension orAs best shown in Fig. l, the'ornamental shell 13, 'for coveringg,r theradiator, is providedwith a slot or opening,` la and the shell on eachside of the slot projects over the boss 12 to hold the spout in positionon the radiator while the shell is in assembled position on the automonbile (see Figs. l, 2, 9 and 10) and to prevent reinovalfo'll the spoutonly upon removal of such shell. The shell 13 may be removably securedto the radiator 9 or other suitable part ot the automobile in anydesired manner. I have not shown the radiator 9 or the shell 13 in tulldetail as these may be ot any standard or approved types; In assemblingthe automobiles, the manufacturer screws the spouts into position on theradiators and V17 is provided with a radial'-circumferential ilange 19extending overa gasket 2O which is'clrcular incross-section and 1scarried 1n Aa groove 21 formed in the depending iiange VVle. y.The capisprovided with a vertical yplate 22 having an arcuate slot 23. Ahingepintle ,24 projects Vthrough ears 25 on the spout and. through anopening in the plate v22 to pivot the cap lto the spout. Afspringbailf27 yhas its opposite ends seated into holes in the spout and thecenter of the bail projeetsthrough the slot 23. When the cover 17 `islatehed in closed position-by the bail, the latter is seated in aknotchg28 in the upper end oftheslot V23. .I/Vhen the cap is to beopened the hail is swung backwardly and, duey to the action of the bailin the slot 25, thecap` is swung open. 1 y n The motometer, illustratedinthe drawings, is of a well known=typeand comprises a circular housingA31, a base 32, a screwthreaded stem 33 and-a thermometer 33a.

.Positioned onthe upper end oit the stem is ya sleeve l34, the Vupperendof which is pressed -firmly against lthe base 32 by a nut lscrewed onto`thethrea'ded stem. The sleeve is provided with a 'circumferentialVgroove 37 yinwhich is seated a split spring ring 38.V The upper edge ofthe opening 29, lformed in the upper end of the tubular portion' 15ofthe spout, is slightlyV beveled as in- 'A ldic'ated at 39an`d Athelower portion of the .openingis enlarged in diameter to ,an overhanglngshoulder .40.

.passes below the shoulder 40 wardly under the shoulder therebylockingvmotometer is heldl `firmly provide Fromthe above description it willbeobvious that when the inotometer is to be attached'ito `the spout itis only necessary to insert the stem 33, together with the sleeve 34 andthe nut 35 mounted thereon, into the openinfy 29. During this insertingmovement,` the beveled edge. 39 forces the spring ringto contract sothat it is positioned entirely within the groove 37. As the Spring itsprings outthe-motometer against removal. The spring 38 ,bears iirmlyagainst-the shoulder 40 while the base 32 near its outer edge bearsagainst the ,top fof-the spout andthe sleeve 34 tits snugly., in theopeningf 29 vso that the lin position, thus avoiding rattle of. themotometer 'on the spout. jA gasket 41 is seated on a shoulder 42, formedat the upper end of the opening 29, to provide a sealed joint. In orderto remove the motometer for any reason, it is rst necessary lto removethe radiator shell and unserew the spout from the radiator and then bymeans of a suitable tool unscrew the nut 35 from the stem 33 of themotometer so that the sleeve 34 can be slid oil' of the stem 33 topermit the motoineter to be removed.

In Fig. 2 I have shown a headless screw 43 screwed into a threadedopening in the upper edge of the tubular portion 15 of Vthe spout, theupper end of the screw being pointed so that it engages in a recess 44in the base of the motometer to prevent .turning movement of thexnotometer and thus hold it in proper angularl position on the spout.

In the modifica-tion shown in Fig. 5, I have shown a gasket 41L betweenthe upper end of the sleeve 34n and the base of the motometer. A ring40L of resilient metal has a fiat portion 45 secured between the lowerend of the sleeve 34a and the nut 35 and the ring is also provided witha plurality of upwardly and downwardly extending tingers46. The lowerend of the sleeve is reduced in diameter. lVhile the motometer is beingapplied to the mounting, the lingers 4G, as they pass through theopening 29, are bent inwardly into engagement with the lower reducedportion of the sleeve, and as the inotometer is moved to its inalposition the lingers 46 spring outwardly and engage against theoverhanging shoulder 40n on the spout, thus locking the motometer inposition on the spout. In order to permit the removal of the motometer,it is necessary to remove the radiator shell and .spout and then remove.the nut 35'* and the locking ring 40a as in the preferred form. Inthis-modilied form, I have shown a. set screw 5() screwed into ahorizontal threaded opening in the spout and having its rear end forcedfirmly into engagement with the sleeve 34 to prevent rotation of themotometer. n

In Fig. 7 I have shown a modified construction, which is similar to thatshown in Fig. 2 except that I have dispensed with the separate nut 35and have screw-threaded the interior ot the sleeve 34" so that it may bescrewed onto the stein of the inotonieter. The lower end ot' the sleevemay have notches 52 or may be nut-shaped to permit it to be unscrewed bv a suitable form of tool, after the spout has been removed from theradiator, in, order to permit withdrawal of the motometer from thespout.

v I claim:

1. The combination of a radiator filling spout having an opening, amotometer having a stem adapted to project through said opening', meanson said stem permitting'the motometer tobe applied While the spout isattached to the` radiatorandipreventing removal oit the motoineter fromthespout eX- cept when thespout `is detached `from the radiator. i 1 2.The combinationof a radiator, .a shell therefor, a lilling spout securedto the radiatorfand removable onlyupon removalioi the radiatOrshell, thespout having `an Opeliing, a motometer having a stem adapted to projectthrough said opening, and means connected to said stem and permittingthe motometerto be applied While the spout is on the radiator andpreventing removal of the motoineter except when the spout is detachedfrom the radiator.

3. rlhe combination of a radiator, a hollow extension havingself-contained means for removably attaching the same to the radiator,additional means removable independently of said` extension iorrendering the latter removable trom the radiator only upon removal otthe former, a motometer, and means for permitting the motometer to beattached to the extension While the eX- tension is on the radiator andpreventing its removal While the extension is attached to the radiator,said means being operable to release the motometer only from the insideof said extension.

fl. The combination of a radiator filling spout having an opening, amotometer having a. stem, a sleeve on said stem, a device for holdingthe sleeve on the stem, a latching member associated with said sleeveand cooperating with said spout to permit the motometer to be attachedto and loclred on the spout by inserting the stem, with said sleeve,holding device and latching member thereon, through said opening, thelatching`"n1ea,ns being rendered ineli'ective by removal oi? saidholding device to permit the inotometer to be detached from the spout.

5. The combination of a radiator iilling spout having an opening, amotometer having a stem, a sleeve on said stem and adapted to fit insaid opening, and latching means associated with said sleeve to permitthe motometer to be applied to said spout and hitched thereon byinserting the stem with the sleeve and latching means thereon throughsaid opening, the sleeve and latching device being disconnectible fromthe stem from the inside of the spout to permit the motemeter to beremoved from the spout.

G. The combination of a radiator filling spout having an opening, amotometer Vhaving a threaded stem, a nut screwed on said stein, a sleeveon said stem prevented'from sliding axially ofthe stem by said nut, anda latehing device `permitting insertion of said stem with the sleeve andnut thereon into said opening and locking the motometer in placethereon, the nut being removable from the stem only from the inside ofthe spoutto permit the motometer to be rcmoved` "from the spout.

`7. Thecombination of a radiator, a spout having anopening andself-contained means for removably securingthc same to the radiator,other `means removable `independently of saiolispout 4for preventingremoval oi'the latter vfrom the radiator only `upon removal oftheformer, amotometer having a stem, a sleeve secured to and removable'from said stem, aspringmember adaptedto snap into locking engagementwith a shoulder on the spout When the stem with the sleeve thereon isinserted into said opening to lock the motometer in place on the spout,and means operable only when the spout is removed from the radiator fordisconnecting the sleeve from the spout to permit the motometer to bedetached from the spout.

8 The combination oi a radiator spout Ahaving an opening and providedwith a shoulder, a motometer having a threaded stem, an unthreadedsleeve adapted to lit in said 'opening and having a circumferentialgroove, a nut screwed on said stem for hold-` ing said sleeve on saidstem, anda spring ring in said groove and adapted to be compressedWithin said groove While the motometer stein with the sleeve is being'inserted through said opening and adapted to snap into engagement withsaid shoulder to lock the motometer on the spout, the nut beingremovable from the stem to permitthe motometer stem to be Withdrawn fromthe sleeve.

9. The combination of a radiator filling spout'having an openingprovided with an outer beveled corner and a shoulder, a motometerhavinga base and a threaded stem, a sleeve on the stem, a nut screwed onsaid stem and firmly pressing the upper end of said sleeve against saidbase, and a spring ring on said sleeve adapted to be compressed `whilethe sleeve is being moved into the opening and adapted to snap intoengage4 ment with said shoulder to lock the motometer in position on thespout, the nut being removable to permit the `motometer stem to beWithdrawn from the sleeve.

f 1 0. In combination With a radiator iilling spout having an opening, amotometer having a stem, a sleeve on said stem adapted to fit in saidopening, a nut holding the sleeve on the stem, and means preventing theWithdrawal of the sleeve from `said opening, the stem of the motometerbeing axially removable fromthe sleeve When the nut is removed from thestem.

l1. In combination with a radiator filling spout having an opening, amotometer having a threaded stem, a nut screwed on said stem, a sleeveon said stem prevented from sliding axially of the stem by said nut, alocking device permitting insertion oi said stem with the sleeve and nutthereon into said opening and locking the motometer in lll) lill)plaoethereon, the nut being removable` from `thestem only from theinside of-the spout Vto permit-the-'motometer to :be removed from the"spout, and.:v means ffor,

preventing yrota'- tio'nfof theflnotometer, v

'.l'2flneombination -withla radiator, of a holloi'v extensionA having anopeningand self- -e'ontainedI means for removably securing the same tothe,radiator,` vmeans removable independently vof said 'extensi'o'nfforpreventing removal of* the extension fromV the radiator WARREN MCARTHUR,JR.

